2007-03-09 09:56:24 · 5 answers · asked by Hector 1 in Cars & Transportation ➔ Other - Cars & Transportation
A turbocharger uses a vehicles exhaust gas to spin the turbines that pressurize the intake, resulting in huge HP gain. Let's say you are crusing down the street at about 35 mph and decide to pass that damn RV that you have been following for twenty miles. You whip out into the left lane and plant your foot on the floor -- the time it takes the turbo to 'spool-up' to the required speed to create positive boost (pressure) and launch the car forward, (count 1 ---2 ---3---), is the 'lag' time. Usually the lag is only seconds but it seems like a lifetime. Modern day systems have all but eliminated turo-lag with sophisticated electronic waste gates and twin/staged turbos but the response time is still not the same as say a supercharged engine.
2007-03-09 09:59:59 · answer #1 · answered by Anonymous · 0⤊ 1⤋
Other guys explained what turbo lag is pretty well. I just have to add that supercharger is an alternative that does not have this defect because the compressor is operated by an accessory belt which makes pressure more readily available than in the case of exhaust gas driven turbo charger.
2007-03-13 05:28:04 · answer #2 · answered by Anonymous · 0⤊ 0⤋
turbo lag is the time it takes for the turbo charger to spool up to speed and compress the air charge to the air intake. The turbo has one finned vane in a sealed chamber of the exhaust and another in a sealed chamber on the intake air side. When the engine speed increases the velocity of the exhaust air increases and spins the impeller vanes on the turbo as the exhaust gas pass through. The exhaust driven impeller vane is connected to the compressor vane by an input shaft. The turbo lag is the time it takes for the increase in engine speed to spin the impeller of the turbo fast enough for the output compressed air to make a difference in performance. That's when you feel the turbo "kicking in".
2007-03-09 10:06:53 · answer #3 · answered by honda guy 7 · 1⤊ 0⤋
A turbo produces power by compressing air and forcing it into your engine, It does this by using your exhaust. So at low rpm's (not much exhaust) or when you stab the throttle (it takes a second for exhaust pressure to build) there is what is called turbo lag. Most newer turbo's have almost eliminated this through better technology.
2007-03-09 10:07:26 · answer #4 · answered by jesta.drifter 5 · 0⤊ 0⤋
Drive belt slippage causes
'lag" usually.
2007-03-09 10:01:41 · answer #5 · answered by AZRAEL 5 · 0⤊ 3⤋